blob: 5846ebf16760a343f04e422c37096a813f70dff6 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
Metadata-Version: 2.1
Name: cachetools
Version: 5.3.3
Summary: Extensible memoizing collections and decorators
Home-page: https://github.com/tkem/cachetools/
Author: Thomas Kemmer
Author-email: tkemmer@computer.org
License: MIT
Classifier: Development Status :: 5 - Production/Stable
Classifier: Environment :: Other Environment
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Operating System :: OS Independent
Classifier: Programming Language :: Python
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.7
Classifier: Programming Language :: Python :: 3.8
Classifier: Programming Language :: Python :: 3.9
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Software Development :: Libraries :: Python Modules
Requires-Python: >=3.7
License-File: LICENSE
cachetools
========================================================================
.. image:: https://img.shields.io/pypi/v/cachetools
:target: https://pypi.org/project/cachetools/
:alt: Latest PyPI version
.. image:: https://img.shields.io/github/actions/workflow/status/tkem/cachetools/ci.yml
:target: https://github.com/tkem/cachetools/actions/workflows/ci.yml
:alt: CI build status
.. image:: https://img.shields.io/readthedocs/cachetools
:target: https://cachetools.readthedocs.io/
:alt: Documentation build status
.. image:: https://img.shields.io/codecov/c/github/tkem/cachetools/master.svg
:target: https://codecov.io/gh/tkem/cachetools
:alt: Test coverage
.. image:: https://img.shields.io/librariesio/sourcerank/pypi/cachetools
:target: https://libraries.io/pypi/cachetools
:alt: Libraries.io SourceRank
.. image:: https://img.shields.io/github/license/tkem/cachetools
:target: https://raw.github.com/tkem/cachetools/master/LICENSE
:alt: License
.. image:: https://img.shields.io/badge/code%20style-black-000000.svg
:target: https://github.com/psf/black
:alt: Code style: black
This module provides various memoizing collections and decorators,
including variants of the Python Standard Library's `@lru_cache`_
function decorator.
.. code-block:: python
from cachetools import cached, LRUCache, TTLCache
# speed up calculating Fibonacci numbers with dynamic programming
@cached(cache={})
def fib(n):
return n if n < 2 else fib(n - 1) + fib(n - 2)
# cache least recently used Python Enhancement Proposals
@cached(cache=LRUCache(maxsize=32))
def get_pep(num):
url = 'http://www.python.org/dev/peps/pep-%04d/' % num
with urllib.request.urlopen(url) as s:
return s.read()
# cache weather data for no longer than ten minutes
@cached(cache=TTLCache(maxsize=1024, ttl=600))
def get_weather(place):
return owm.weather_at_place(place).get_weather()
For the purpose of this module, a *cache* is a mutable_ mapping_ of a
fixed maximum size. When the cache is full, i.e. by adding another
item the cache would exceed its maximum size, the cache must choose
which item(s) to discard based on a suitable `cache algorithm`_.
This module provides multiple cache classes based on different cache
algorithms, as well as decorators for easily memoizing function and
method calls.
Installation
------------------------------------------------------------------------
cachetools is available from PyPI_ and can be installed by running::
pip install cachetools
Typing stubs for this package are provided by typeshed_ and can be
installed by running::
pip install types-cachetools
Project Resources
------------------------------------------------------------------------
- `Documentation`_
- `Issue tracker`_
- `Source code`_
- `Change log`_
Related Projects
------------------------------------------------------------------------
- asyncache_: Helpers to use cachetools with async functions
- cacheing_: Pure Python Cacheing Library
- CacheToolsUtils_: Cachetools Utilities
- kids.cache_: Kids caching library
- shelved-cache_: Persistent cache for Python cachetools
License
------------------------------------------------------------------------
Copyright (c) 2014-2024 Thomas Kemmer.
Licensed under the `MIT License`_.
.. _@lru_cache: https://docs.python.org/3/library/functools.html#functools.lru_cache
.. _mutable: https://docs.python.org/dev/glossary.html#term-mutable
.. _mapping: https://docs.python.org/dev/glossary.html#term-mapping
.. _cache algorithm: https://en.wikipedia.org/wiki/Cache_algorithms
.. _PyPI: https://pypi.org/project/cachetools/
.. _typeshed: https://github.com/python/typeshed/
.. _Documentation: https://cachetools.readthedocs.io/
.. _Issue tracker: https://github.com/tkem/cachetools/issues/
.. _Source code: https://github.com/tkem/cachetools/
.. _Change log: https://github.com/tkem/cachetools/blob/master/CHANGELOG.rst
.. _MIT License: https://raw.github.com/tkem/cachetools/master/LICENSE
.. _asyncache: https://pypi.org/project/asyncache/
.. _cacheing: https://github.com/breid48/cacheing
.. _CacheToolsUtils: https://pypi.org/project/CacheToolsUtils/
.. _kids.cache: https://pypi.org/project/kids.cache/
.. _shelved-cache: https://pypi.org/project/shelved-cache/
|
